Perhaps you should try some spelling variations:
internacional a » internacional para (Expand Search)
instituto de » institutos de (Expand Search)
a pesquisa » de pesquisa (Expand Search), de pesquisas (Expand Search)
colaboracao » elaboracao (Expand Search)
astronomico- » astronomia- (Expand Search), agronomico- (Expand Search), astronomo- (Expand Search)
iac » inac (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "instituto de colaboracao internacional a pesquisa astronomico- (iasc OR iac)~".
• Adding a wildcard symbol may retrieve word variants: instituto de colaboracao internacional a pesquisa astronomico- (iasc OR iac)*.